In mid-September of this year, a wildlife photographer in Yellowstone National Park captured a series of photos over the span of 3 days depicting a male Grizzly, a female Grizzly and her 3 cubs, and a pack of wolves all trying to claim a bison carcass. Bison carcass draws 5 grizzlies, wolves into photographer's view
This occurrence was captured on video as well. Yellowstone Dinner Party - grizzlies and wolves - YouTube